一只月饼，切成8块，最少要切几刀？3L(I7h3@)a0x
算式：提示;P/t)D0V)A:[-d:W9g3L(I7h3@)a0x
答：最少要切5_.{0|.a+M8W+e2A-b5Y刀。3L(I7h3@)a0x